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Suspension & Braking Forum by BimmerWorld
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Old 09-21-2009, 07:34 AM   #1
Mark M
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XI......what setup would you install and why?

So the XI is in need of a new setup. Time to do away with that 4x4 look. A little background, it will be my daily driver. I commute about 360 miles per week with it, so am looking for something that is not bone-jarring. I have KW V2 coilovers on my 135 and love them. I have HR Race springs and Billies on my E30 M3 and they are a great setup too.

So from these options, what would prove comfortable, reliable, and suited for a daily driver while still getting rid of that aweful fender gap.

- HR Sport Springs - Bilstein Sports (Tried and true, although most agree it is a tad bit harsh)

- HR Coilovers (Any reviews?)

- KW coilovers (a bit salty at $1450 for only the V1s and some have said poor quality issues on front struts)

Looking to make a decision in the next 24hrs so that I can order the kit and install the new setup this weekend.

Thanks all!!

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Old 09-21-2009, 08:50 AM   #2
ryanwhite74115
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i roll with no springs for the ultimate drop!!!!
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Old 09-21-2009, 08:52 AM   #3
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but in all honesty i think i would take coilovers over springs and shock since they are matched and usually can be adjusted
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Old 09-21-2009, 08:58 AM   #4
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^ not sure why you are responding in this thread as you dont have an xi.

Mark,
I am interested in this as well. I am leaning towards the H&R coilover from TurnerMotorSports.com because they have a great reputation and have a race history and only back great products. My advice would be to call them, talk to drew and get more information on theirs because the website doesn't mention much about them other than they are blueprinted for turner to their specifications.

The other option would be the H&R sport springs matched to either Koni adjustables or Bilstein Sport Shocks.

Seeing the experience ///A had with his KW's im going to stay away from those.
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Old 09-21-2009, 10:17 AM   #5
Mark M
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Agreed, from what I have also read about ///A's experience with KWs I am leary to go that route. However, that said, the KWs on my 135 are phenomenal.

Sounds like a plan, I will call Turner and ask about the HR Coilover setup. Although I can't find anyone who is running them. Odd. But the price is much better than the outrageous $1450 for KW.

Will keep ya posted....I plan on making the move here soon...want to do the wrenching this weekend.
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Old 09-21-2009, 10:23 AM   #6
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I have the HR Sport Springs - Bilstein Sports setup and have to say it is a little stiff for the roads around Boston.
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Old 09-21-2009, 10:33 AM   #7
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Yeah, I just did HR Sport Springs with my OEM shocks...then I realized that the DINAN shock/spring pack is not very expensive, I wish I did that.

I stayed away from coil overs because you will have major problems if you drop an xi too low.

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Old 09-21-2009, 01:59 PM   #8
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Out of curiosity I opted to try the HR Coilover setup. Several have said that the standard HR springs and Bilstein shocks rode too harsh. This is likely due to the lack of damper travel due to lowered springs on shorter shocks.

Whereas the HR Coilovers and all coilovers maintain the original travel length for the dampers while still enabling me to adjust how low I choose to go. Mild to wild, however I will error on the side of caution and don't plan on going too low, maybe 1.5" / 1.25" all around. The other benefit of a coiover setup is the springs and dampers are tuned to work together.

I will do the install this weekend and report back to the group! Wdeerfield, I'll let ya know how this package works out.
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Old 09-21-2009, 06:00 PM   #9
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Hey Mark was very interested in this setup as well, have looked into the different options and trying to figure out what will be the best option for both continued drive-ability while at the same time moving away from the 4x4 look.

Best of the luck with the install and looking forward to pics and review.
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Old 09-21-2009, 08:02 PM   #10
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Quote:
Originally Posted by Mark M View Post
Out of curiosity I opted to try the HR Coilover setup. Several have said that the standard HR springs and Bilstein shocks rode too harsh. This is likely due to the lack of damper travel due to lowered springs on shorter shocks.

Whereas the HR Coilovers and all coilovers maintain the original travel length for the dampers while still enabling me to adjust how low I choose to go. Mild to wild, however I will error on the side of caution and don't plan on going too low, maybe 1.5" / 1.25" all around. The other benefit of a coiover setup is the springs and dampers are tuned to work together.

I will do the install this weekend and report back to the group! Wdeerfield, I'll let ya know how this package works out.
awesome. definitely let me know how you make out. I want to drop the xi but have the snapped control arm fear that ///a encountered. If you could, take a before and after from about 2 feet off the ground from the side of the car. that would be much appreciated if you could. turner may have another purchase coming if yours turns out how they say it will on their site.
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Old 09-21-2009, 08:40 PM   #11
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Snapped control arm? Never heard that one. Please elaborate?

Only concerns I had heard from going too low is the premature wear it might induce on the front CV joints/boots. However I don't plan on slamming it low. I just prefer a tasteful drop, like ~1.5 front and ~1.25 rear. My main reason for trying the coilovers is that most people confirmed the standard HR sport springs and Bilstein shocks are quite stiff for everyday use.

Oh, I did not order from Turner. I tried, but they could not gaurentee delivery this week for my install this Saturday. However an alternative source, say vendor 'Mod', was able to match the price and guarentee delivery this week. I really wanted to give Turner the business, after all I was ordering Monday noon EST and yet they could not guarentee Fri delivery??
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Old 09-21-2009, 09:16 PM   #12
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No one has ever snapped a control arm by lowering a BMW. Proof?
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Old 09-21-2009, 09:42 PM   #13
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ok so not a snapped control arm. but definite problems http://forum.e46fanatics.com/showpos...&postcount=548
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Old 09-27-2009, 10:07 AM   #14
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Morning all, sitting here on a rainy Sunday morning with my cup of coffee, still a bit sore from wrenching the install yesterday.

To recap, I ordered the H&R Street Performance Coilovers for my 2002 325xi. My goal was to modestly lower the car while enhancing the feel of the suspension and still maintain a comfortable ride. With my daily commute, I put about 17,000 miles on it a year and keeping it comfortable was a strong concern.

With comfort as a key concern, that is why I did not opt for the H&R springs with Bilstein shock combo....many on here reported it too stiff or firm. The other contenders for the xi were the KW V1 or the H&R Street Perf coilovers. Personally, I felt the KWs were a bit over priced for my needs, this car will not see track time, and I really wanted to keep spending in check. The H&R coilovers were more expensive than I initially wanted to spend, but the freedom to adjust my ride height was a key benefit.

Ok, with the H&R coilovers delivered, now time for the install.

Saturday morning I dived into it. Fronts first. Install was not too bad, fairly straight forward. Things to note, you will need to carry over the bumpstops from the old struts and also trim it. The stock bumpstop is about 2.5 inches in length. I trimmed an inch off and reassembled it all. Setting/adjusting the front ride height was easy and could even be done on the jack with the tire still bolted on.

On to the rears. Again, the rear install was fairly simple and straight forward also. Of note, the rear adjustable spring perches are a bit awkward to fit. I had to raise the rear suspension travel upward to enable enough clearance between the rear half-shaft and the lower swing arm to fit the base of the adjuster. Also, recommend getting a medium length 8mm allen socket. You will need this to perform the rear height adjustment as it will allow you clearnace along side of the half-shaft.

Now for the ride and feel of the kit. I took it out in the rain last night and put about 40 miles on it. So far, it feels great, not too stiff or bone jarring over bumps, pot holes etc, very confortable and sporty. But it also keeps very flat and composed in the turns. Plus I love how I no longer have that annoying rear end squat when I accelerate. Currently I am running the stock 16" rims in 205/55 Michelin all seasons, so I can't really comment on cornering behavior yet. But 18" shoes with sticky rubber is on order.

So, I will report more in the coming week or so, but for now....I am very pleased with the kit.

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Old 09-28-2009, 08:20 PM   #15
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Great, helpful report Mark. Sounds like you chose the right setup. How much did you lower front and rear from stock?
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Old 09-28-2009, 08:38 PM   #16
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Thanks!

She is lowered about 1.5" front and 1.25" rear.

However, when the new 18" CSL reps show up, then I will fine tune the ride height and have her alligned. Plus pics will follow on here. Give me another two weeks to wrap it all up.
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Old 09-30-2009, 11:37 AM   #17
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Nice write-up, Mark. Waiting for the pics (did you finally do a before/after shoot ?). BTW, in your options, you forgot the H&R sport + Koni Yellow struts, wich I have and can be very compliant when set to soft or 1/4 turn to soft. Anyway, congrats on your purchase... let us know how it feels on 18".

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Old 10-01-2009, 12:56 AM   #18
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Can't wait for pics. Maybe I will also go this route. Does anyone have any information on eibach springs?
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Old 10-01-2009, 07:21 AM   #19
Mark M
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I've ordered the rims from a fellow forum member on 1addicts, so hopefully they will be on my door step by mid next week.

(18" VMR CSL Reps in Hypersilver)

I've also picked up a new set of front control arm bushings last night. With the install of the H&R coilovers the worn LCABs are much more pronounced. Gonna plan to install them Sat morning. Hope all goes well.

Next mods, some DDM P46 HIDs and clear lights all around.
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Old 10-01-2009, 07:34 AM   #20
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nice mark, moving right along! sounds like the car is headed in a great direction. what color is your xi? ive got steel gray with hyperblack csl's. the hypersilver should look great!
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